EFFECT OF THE ANISOTROPIC MAGNETIC SHIFT ON POLYCRYSTALLINE 1ST-ORDER QUADRUPOLE LINESHAPES FOR NONCOINCIDENT PRINCIPAL AXES

An analysis which shows that the effect of the anisotropic magnetic shift on a polycrystalline first-order quadrupole lineshape is to shift the satellite steps and the peaks in opposite directions from νL in a two to one ratio while leaving the distances between the steps and between the peaks the same is presented. This shifting is a function of the orientation of the principal-axis systems of the anisotropic magnetic shift and the quadrupole tensors as well as of the interaction parameters. For the case of axial symmetry of the anisotropic magnetic shift, equations which allow the determination of both sets of interaction parameters as well as the angle between the principal z axes of the two tensor systems from an unknown spectrum are presented. © 1991.